| (19) |
 |
|
(11) |
EP 0 115 051 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
05.09.1984 Bulletin 1984/36 |
| (43) |
Date of publication A2: |
|
08.08.1984 Bulletin 1984/32 |
| (22) |
Date of filing: 22.12.1983 |
|
|
| (84) |
Designated Contracting States: |
|
DE FR GB |
| (30) |
Priority: |
23.12.1982 JP 22920282
|
| (71) |
Applicant: TOYO RUBBER CHEMICAL INDUSTRY CO. LTD. |
|
() |
|
| (72) |
Inventors: |
|
- Kumasaka, Sadao
()
- Tada, Satomi
()
- Horikoshi, Shigeo
()
- Kamanaka, Tamaki
()
- Taniguchi, Hiroshi
()
|
|
| |
|
| (54) |
Process for regenerating resin |
(57) A process for regenerating a resin, comprises the steps of dissolving a waste resin
in an organic solvent to provide a resin solution, mixing the resin solution with
a liquid of normal temperature, the liquid being immiscible with the solvent, scarcely
dissolving the resin, and having a specific gravity smaller than that of the solvent
and larger than that of the resin, thereby separating the resin from a mixture of
the resin solution and the liquid, and recovering the resin. The liquid may have a
temperature higher than the boiling point of the solvent. In this case, the solvent
evaporation takes place together with the resin separation. The evaporated solvent
is cooled later for recovery of the solvent.